1 1 Broad-spectrum inhibitors against 3C-like proteases of feline coronaviruses 2 and feline caliciviruses 3 4 5 6 Yunjeong Kim a#, Vinay Shivanna a, Sanjeev Narayanan a, Allan M. Prior b*, Sahani 7 Weerasekara b, Duy H. Hua b, Anushka C. Galasiti Kankanamalage c, William C. 8 Groutas c, and Kyeong-Ok Chang a 9 10 Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, 11 Kansas State University, Manhattan, Kansas, USAa; Department of Chemistry, Kansas 12 State University, Manhattan, Kansas, USAb; Department of Chemistry, Wichita State 13 University, Wichita, Kansas, USAc 14 15 Running Head: Dual inhibitors of feline coronavirus and calicivirus 16 17 #Address correspondence to Yunjeong Kim,